Gx470 rear spring conversion question/help/advice (1 Viewer)

[1slowcrx]

I currently have the "tricked rear airbag" with spacers and adjustment rod all the way up but its just too rough for my liking and its squeaking a lot over bumps from being max'd out. I originally wanted to keep the airbag but im just going to ditch it in favor of a coil spring. I've been doing research on rear spring conversion setup and came across a few setup that has the option of "secondary/upper spring isolators". my question is, what is the function of the isolator and is it mandatory??? thanks in advance

 

[HomersCanyonero]

That's a good question. I just did a search and these things have a couple of names. I've seen them referred most often as spring isolators, but I also found spring insulators and spring seat sub-assembly.

Amazon product ASIN B00GKH33NS

Toyota 4RUNNER Coil Spring Insulator - 4830235050 | Toyota Parts Overstock, Lakeland FL

Coil Spring Insulator. Toyota 4RUNNER. Genuine Toyota Part - 4830235050 (48302-35050). Ships from Toyota Parts Overstock, Lakeland FL

parts.lakelandtoyota.com

Essentially, these rubber cones help insulate road noise and road vibrations away from the frame. They also act as a bump stop if it can reach the bottom of the spring if the spring fails or you tow something really heavy. They also act as a cushion between the coil and the frame.

[delete] I also thought they help keep the spring in place when there's full flex and the spring comes loose. The cone shaped isolator guides the spring back into place.[/delete]

I bought mine new, but you can get them at a junk yard from a 4Runner. They also come included for a higher price in some coil conversion kits.

 

[little_joe]

Essentially, these rubber cones help insulate road noise and road vibrations away from the frame. They also act as a bump stop if it can reach the bottom of the spring if the spring fails or you tow something really heavy. They also act as a cushion between the coil and the frame.

I also thought they help keep the spring in place when there's full flex and the spring comes loose. The cone shaped isolator guides the spring back into place.

All good info, except for guiding the spring into place under full flex. Unless you secure the isolators to the upper bucket, if/when the top of the spring pulls away from the bucket, the isolator is coming with it. Of course, this is dependent on shock length, swaybar, etc etc. But the isolators are floating/moving with spring when there is no spring pressure at the top...

 

[HomersCanyonero]

Got it